Color

#6b1bbb

#6b1bbb
hex#6b1bbb
rgbrgb(107, 27, 187)
hslhsl(270, 75%, 42%)
oklchoklch(0.45 0.221 299.2)
Closest name: Fuchsia Nebula (#7722aa)Relative luminance 0.075

Colors that go with #6b1bbb

Olive Green, Charcoal and Denim lead the list. Each partner is a real named colour with the reason it works — a wheel relationship, a neutral that carries it, or a pairing lifted from a palette or brand system that actually shipped — and every pair opens in the palette tool.

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#6bbb1b

#1b1bbb · #bb1bbb

#bb6b1b · #1bbb6b

Split-complementary

Open in tool →

#bbbb1b · #1bbb1b

#bb1b1b · #6bbb1b · #1bbbbb

Contrast

#6b1bbb as textRatioAAAA largeAAAFix
Aaon white
8.4:1passpasspassPasses AAA — no fix needed.
Aaon black
2.5:1failfailfail
  • AA: use #994ce6 as the text (4.53:1)
  • AAA: use #b57eed as the text (7.17:1)
  • AA: or shift the background to #bfbfbf (4.57:1)
  • AAA: or shift the background to #ebebeb (7.05:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #6b1bbb as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Fonts for this mood

#6b1bbb reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #6b1bbb
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — direct_palette, edit_direction, check_palette, check_contrast — read-only, no key. Every direction it proposes comes with a /colors/d/… link: open it, lock what you like, paste the link back, and the agent edits rather than re-rolls.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #6b1bbb and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/6b1bbb-b59cc4-c9cb62-2c1f2d-eae9f1?lock=0&style=vibrant

Want the agent to remember your picks and write them into a living brand? Create a free BrandSweets workspace.

Machine-readable: color.md